Why do we have to simplify expressions?
To make the Maths easier later, it is important that the expressions are given in their simplest form.

What techniques can we use to simplify expressions?
We can collect like terms, use index notation for repeated multiplications of like terms, and factorise.

Activity: Once you have learnt how to simplify, try playing this game to help you practice saying a Mathmatical Expression in Everyday English.